Arnold Schwarzenegger endorsed Gov. John Kasich on Sunday as Mr. Kasich rallied voters in his home state of Ohio, whose primary has emerged as a critical moment in the Republican race.

Mr. Schwarzenegger, wearing a jacket with the logo of the Kasich campaign at an outdoor rally here, told the crowd that Mr. Kasich “kicked some serious butt” during his time in Congress.

“He was an action hero when he went to Washington,” Mr. Schwarzenegger said.

Mr. Schwarzenegger, a former governor of California, puts on an annual sports festival in Columbus, which took place over the past few days. At the rally, he recalled being introduced to Mr. Kasich when he was first running for Congress in the 1980s, and cited his achievements in Congress and as Ohio’s governor.

“This is the land of opportunity; it is the greatest nation in the world, no matter what anyone says out there,” Mr. Schwarzenegger said. “And we need John Kasich to now take charge and be at the White House.”

Now a seemingly hung over or mildly stupefied Schwartzenegger has cut an ad for Kasich:

Infuriated by Disraeli in Parliamentary debate, Gladstone said: “Mr. Disraeli, you will probably die by the hangman’s noose or a vile disease.” Disraeli replied: “Sir, that depends upon whether I embrace your principles or your mistress.”

The great thing about this is that while it probably influences absolutely no one to actually vote for Kasich, Schwartzenegger’s endorsement tells you all you need to know about Kasich’s politics. One can hope that Kasich doesn’t embrace his morality as well.